US 11,850,172 B2
High retention drainage device
Saurav V. Gupta, Medway, MA (US); Marc A. Barthet, Marseilles (FR); Jean-Michel Gonzalez, Fuveau (FR); Camron Hagemeyer, Bloomington, IN (US); and Darren G. Curran, Galway (IE)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Apr. 5, 2021, as Appl. No. 17/222,735.
Claims priority of provisional application 63/005,936, filed on Apr. 6, 2020.
Prior Publication US 2021/0307943 A1, Oct. 7, 2021
Int. Cl. A61F 2/90 (2013.01); A61F 2/852 (2013.01)
CPC A61F 2/90 (2013.01) [A61F 2/852 (2013.01); A61F 2220/0008 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A stent, comprising:
an elongate body configured to be expandable between a first constrained configuration and a second unconstrained configuration,
the elongate body in the second unconstrained configuration including a first retention member extending radially outwardly from the elongate body, a second retention member extending radially outwardly from the elongate body, and a saddle region defining a lumen extending along a longitudinal axis therebetween;
wherein:
at least one of the first retention member or the second retention member comprises a double-walled flange having an axially inward wall, an axially outward wall spaced apart from the axially inward wall, and a radially outwardmost edge extending therebetween; and
at least a portion of the inward wall of the at least one of the first retention member or the second retention member bends towards a vertical center plane of the saddle region along and transverse to the longitudinal axis such that a radially-outer portion of said at least a portion is closer to the vertical center plane than a radially-inner portion of said at least a portion.